摘要
采用同步观测及对比分析方法,分析上海市郊林带区和非林带区(麦田和菜田)地下水位和地表径流的变化特征,结果表明:林带区与非林带土壤质地、耕植方式、排水形式相同,地下水位升幅高于非林带,地表径流小于非林带,这可能是林带树冠截留降水缘故(林带区与菜田比较)。但非林带雨前地下水位埋深大和林带区以坡地产流为主、非林带为蓄满产流时,林带区地下水位升幅低于非林带,地表径流大于非林带(林带区与麦田比较);林带区地下水位的消退速度都小于麦田和菜田,主要原因可能是林带区的树根有较强的蓄水能力。
Changes in groundwater level and surface runoff in the forest and non-forest regions （wheat and vegetable fields） of suburban Shanghai were analyzed by simultaneous groundwater monitoring and contrastable analysis. With regards soil type, cropping pattern and drainage type in the forest and non-forest regions, results show higher increase in groundwater level in forest regions than in non-forest regions. However, surface runoff is lower in forest than in non-forest regions, possibly due to higher canopy interception by forest vegetation. Groundwater level rising range of forest regions is lower than that of non-forest regions, and the runoff amount is bigger when the groundwater level of non-forest region is deeper before rain, and runoff is mainly generated on slope in froest region, and runoff generation is mainly due to ponding in non-forest region （wheat field）. The rate of groundwater descent is slower in forest than in non-forest regions, possibly due to better ability of forest trees and roots to control surface runoff.
出处
《中国生态农业学报》
CAS
CSCD
2008年第3期707-711,共5页
Chinese Journal of Eco-Agriculture
基金
《上海市郊造林引起的生态气候环境变化规律研究》(农科攻字(2002)第4-4-3号)项目资助
关键词
上海市郊
林带
非林带
地下水位
地表径流
树冠截留
蓄水能力
Suburban Shanghai, Forest region, Non-forest region, Groundwater level, Surface runoff, Tree canopy interception, Water storage
